1. What does the correlation coefficient measure? How do you interpret a correlation coefficient of zero? 2. What is a proportion? Provide some practical examples where proportions are used in business. 3. What is an outlier? How can one be identified? 4. Explain the information contained in box plots and dot‐ scale diagrams. 5. What is a PivotTable? Describe some of the key features that PivotTables have.